A calibration plot of absorbance vs concentration (ppm) was obatined with standard known Red 40 dye solution. - the slope of the best-fit straight line of the plot is 0.057 ppm^-1 - The absorbance of the dilute unknown sports drink was 0.88 What is the concentration of this dilute unknown sports drink?

Q: Trial 1: Initial pH= 3.92mL Mass of KHP and Paper= 0.868g Mass of paper= 0.357g Mass of KHP= 0.511g…

A: The titration curves for both the trials given are,

Q: Name Experiment 4-Prelab Assignment 1. A 0.219 g sample of an unknown organic acid was titrated with…

A: Since the organic acid has 2 monoacidic, -COOH groups, it is a diprotic acid(H2A).  Mass of the…

Q: I mixed hard water or tap water or soft water 5ml + pH buffer 1ml + 3 drops of indicator + EDTA xml…

A: Hard water refers to the water sample that contains soluble salts of calcium and magnesium. It does…

Q: A patient with respiratory alkalosis has a blood plasma pH of 7.50. What is the [OH-] of the blood…

A:

Q: Imagine that you accidentally used 30 mL of water instead of ~20 mL to wash down your flask in the…

A: Acid-base titration of vinegar is done in laboratories to find out the concentration of acetic acid.…

Q: How much calcium would you ingest by drinking one 8 oz glass of your tap water? Show all…

A: Average concentration of CaCO3 in ppm = 52.07 ppm = 52.07 g of CaCO3 in 106 ml of water…

Q: The solubility of strontium carbonate is 0.0011 g/100 mL at 20°C. Calculate the Ksp value for this…

A: We are given,Solubiity of strontium carbonate, SrCO3 =  0.0011 g/100 mLVolume =100 mLMass of SrCO3 =…

Q: A 53.0 -mL sample of a 14 % (m/v) H2SO4 solution is added to water to give a final volume of 440 mL.…

A:

Q: f) 6L of 1mM IPTG. You need to prepare a stock solution of 1M IPTG that will be sufficient to give…

A:

Q: 1. Calculate the molar concentration of the hydrochloric acid solution if you know that sp.g…

A: Solution:- Provided data:- Specific gravity of HCl solution = 1.19 = 1.19 g/mL % = 37%  We have to…

Q: Equilibrium Solutions Volume (ml) Trial # 2.00 x 10-3 M Fe(NO3)3 (ml) in 5.00 M HNO3 2.00 x…

A: Molarity is a way of expressing concentration in terms of moles of substance present per liter of…

Q: Find [CO32-] of a 0.070 M carbonic acid solution. Express your answer using two significant figures.…

A:

Q: A 22.41 ml volume of 0.1987 M NaOH solution is required to reach the phenolphthalein endpoint in the…

A:

Q: Only typed solution

A: The objective of the question is to understand the reasons behind the increase in pH and PO2 in the…

Q: CHEM1407 Homework Ch 16, Sec 6A Name: #3) A 2.5x10-³M of an unknown acid has a pH of 3.80 at 25C.…

A: “Since you have posted multiple questions, we will provide the solution  only to the first question…

Q: O Macmillan Learning Attempt 3 Repeat Experiment #2 using acetic acid unknown #2. Begin by measuring…

A: Start by measuring 5.00 mL of the unknown acetic acid solution using a 10 mL graduated cylinder. Add…

Q: Show all work, thank you!

A: Solubility equilibrium: Fe(OH)3(s) ⇌ Fe3+(aq) + 3 OH-(aq)So, Ksp = [Fe3+][OH-]3 [Note: to convert…

Q: Explain why one compound (Urea/cholesterol) dissolved in water while the other one did not using…

A: Interaction of two or more compounds with each other can be explained on the basis of like dissolve…

Q: Question 1 a) Benzenecarboxylic acid, commonly known as benzoic acid, has a pK₁ of 4.20. Find the pH…

A: #(a):  pKa of benzoic acid(C6H5COOH) = 4.20  Ka = 10-pKa = 10-4.20 = 6.31*10-5   Initial…

Q: Buffer System ID Acetic Acid Volume of ~0.50 M HC2H3O2 (mL) 1 30 Sodium Acetate Volume of ~0.50 M…

A: The objective of the question is to calculate the values of pH for the given buffer system ID.

Q: What is the average NaOH concentration?

A: This is a titration of Potassium Hydrogen Phthalate(KHP) with Sodium Hydroxide(NaOH). The…

Q: thc +/- √b²-4ac 2a 4. 0.275 M CH3COOH; Ka = 1.8 x 10-5 Equation: EXPERIMENT 15 ACIDS AND BASES: pH,…

A: [H+] can be calculated from the ICE chart for the dissociation of CH3COOH and Ka expression.  From…

Q: Calculate how much by volume of each concentrated stock solution you will need. Your starting…

A: The objective of the question is to calculate the volume of each concentrated stock solution…

Q: If pH (± 0.5 pH units) strips were used to determine the equivalence point at pH=8.5. What is the…

A: The method you have done and all this is fine and correct. There may be some other problem like…

Q: Given the following data Dissolved Oxygen Titration Data Trial 1 Preparation of titrant 0.4455 g…

A:

Q: S- BIOL111ASP2020 B Canvas Login at Mary Baldwin Un x Chemistry 121 101 Chem101 Question 1 of 29 In…

A: An acidic substance is the substance that can give H+ ions. They are corrosive and sour in nature.…

Q: Question 3 A student performed three aqueous layer titrations in Part 1 and they reported the…

A:

Q: ± 0.00098 18 Bromocresol green 0.08641 ± 0.00113 29 Is the difference between indicators

A: 95 % confidence interval for a population mean can be represented as

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.